DogWatch SideWalker SW-5 Leash Training Collar - 5 Adjustable Settings - Waterproof - DW-0022 You and your dog will enjoy more walking, less pulling, and more time together The vibration or stimulation gradually increases as your dog pulls and resets when the pulling stops The long-lasting, easy to recharge battery typically stays charged for several days Low battery indicator: Lets you know when it is time to recharge Lightweight, waterproof: Because dogs will be dogs